Reply by GarageWoodworks

You need to make absolutely sure that you have found the top dead center of your cutter head. The best way to do this is to use a dial indicator on a magnetic base (Woodcraft $20). You want your knives to be at the same height as the outfeed table at top-dead-center (TDC). Don’t rely on the “sliding ruler technique” to find TDC.

Here is a video demonstrating how I find top dead center and set the knives. Let me know if you have questions.:

http://www.garagewoodworks.com/video.php?video=v10

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